Nitrogen exhaust silencer

Abstract

The utility model relates to a nitrogen exhaust silencer, which belongs to the technical field of molecular sieve oxygenerator accessories and comprises a silencer lower shell, a silencer upper shell is clamped at the upper end of the silencer lower shell, and a clamping head is fixedly arranged on the edge of the lower surface of the silencer upper shell. The silencer has the beneficial effects that the air inlet in the surface of the silencer upper shell can be connected with the air outlet of the adsorption tower, so that nitrogen discharged from the adsorption tower enters the silencer lower shell from the air inlet, and the introduced nitrogen is blocked by the blocking ring on the outer wall of the fixed rod and is led to the other blocking ring from the notch in the outer wall of the blocking ring; the notches in the outer walls of every two adjacent blocking rings are distributed in a staggered mode, the moving direction of introduced nitrogen can be effectively changed, noise in the silencer is attenuated or reflected back, meanwhile, noise is absorbed through cooperation with silencing cotton on the inner surface of the silencer lower shell, and finally the noise is exhausted from the air outlet. The process can effectively reduce the noise of the oxygenerator for discharging nitrogen, and noise pollution is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of molecular sieve oxygen generator accessories, in particular to a nitrogen exhaust silencer. Background Art

[0002] Molecular sieve oxygen generator refers to a new type of equipment that extracts oxygen from the air based on pressure swing adsorption (PSA) technology. It uses molecular sieve physical adsorption and desorption technology to fill the molecular sieve in the oxygen generator. It can adsorb nitrogen in the air when pressurized, and the remaining unabsorbed oxygen is collected and becomes high-purity oxygen after purification. The specific working process is that the compressed air is purified by the air purification dryer and enters the adsorption tower through the switching valve. In the adsorption tower, nitrogen is adsorbed by the molecular sieve, and oxygen is accumulated at the top of the adsorption tower and enters the oxygen storage tank. It is then filtered through the odor removal, dust removal filter and sterilization filter to obtain qualified medical oxygen.

[0003] In the process of oxygen production by the oxygen generator, the nitrogen adsorbed by the adsorption tower will be discharged to the outside. The noise of the gas discharge during the discharge process will pollute the workshop and cause noise pollution, thus affecting the user experience of the molecular sieve oxygen generator. In response to the above situation, we have launched a nitrogen exhaust muffler. Utility Model Content

[0004] The purpose of the utility model is to provide a nitrogen exhaust silencer to solve the problem proposed in the above background technology that the nitrogen adsorbed by the adsorption tower will be discharged to the outside, and the noise of the gas discharge during the discharge process will pollute the work workshop, causing noise pollution, thereby affecting the user experience of the molecular sieve oxygen generator.

[0005] The technical solution of the utility model is:

[0006] It includes a muffler lower shell, the upper end of the muffler lower shell is clamped with the muffler upper shell, a clamping head is fixedly provided on the edge of the lower surface of the muffler upper shell, a clamping groove matching the clamping head is opened on the upper edge of the upper end of the muffler lower shell, an air inlet is arranged on the upper surface of the muffler lower shell, silencer cotton is glued on the inner surface of the muffler lower shell, a fixing rod is fixedly provided on the inner wall of the muffler lower shell, a plurality of barrier rings are equidistantly provided on the outer wall of the fixing rod, a plurality of the barrier rings are surrounded by notches on the outer walls, the notches on the outer walls of two adjacent barrier rings are staggered, and an air outlet is opened on the lower surface of the muffler lower shell.

[0007] Furthermore, a sealing strip is provided at the upper edge of the lower shell of the muffler, and a sealing groove matching the sealing strip is provided at the lower surface edge of the upper shell of the muffler.

[0008] Furthermore, the lower surface of the muffler upper shell is tightly fitted with the outer surface of the barrier ring.

[0009] Furthermore, the notch is arc-shaped.

[0010] Furthermore, a flannel layer is glued to the outer surface of the notch.

[0011] Furthermore, the fixing rod and the barrier ring are integrally formed by injection molding.

[0012] The utility model provides a nitrogen exhaust muffler through improvement, which has the following improvements and advantages compared with the prior art:

[0013] First: In the utility model, the air inlet on the surface of the upper shell of the muffler can be connected with the air outlet of the adsorption tower, so that the nitrogen discharged from the adsorption tower enters the lower shell of the muffler from the air inlet, and the introduced nitrogen will be blocked by the barrier ring on the outer wall of the fixed rod, and pass through the notch on the outer wall of the barrier ring to another barrier ring. The notches on the outer walls of the two adjacent barrier rings are staggered, which can effectively change the moving direction of the introduced nitrogen, so that the noise in the muffler is attenuated or reflected back, and at the same time, the noise is absorbed by the silencer cotton on the inner surface of the lower shell of the muffler, and finally discharged from the air outlet. The process can effectively reduce the noise of nitrogen exhaust from the oxygen generator and avoid noise pollution.

[0014] Second: In the utility model, during the clamping connection between the lower shell of the muffler and the upper shell of the muffler, the sealing strip at the upper end of the lower shell of the muffler can be clamped with the sealing groove on the lower surface of the upper shell of the muffler, thereby improving the sealing of the muffler assembly and avoiding nitrogen leakage, and a flannel layer is glued at the arc-shaped notch, and the fine fluff on the surface of the flannel layer can absorb the nitrogen noise passing through the notch, thereby further improving the noise reduction effect of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the fixed rod of the utility model;

[0018] Figure 3 This utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing rod of the utility model.

[0020] Explanation of the reference numerals: 1. muffler lower shell; 2. muffler upper shell; 3. clamp; 4. sealing strip; 5. air inlet; 6. silencer cotton; 7. fixing rod; 8. barrier ring; 9. notch; 10. flannel layer; 11. air outlet. DETAILED DESCRIPTION

[0021] The following will be combined with the attached Figures 1 to 4 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a nitrogen exhaust muffler through improvement, such as Figure 1-Figure 4 As shown, it includes a muffler lower shell 1, a muffler upper shell 2 is clamped on the upper end of the muffler lower shell 1, a clamping head 3 is fixedly arranged on the edge of the lower surface of the muffler upper shell 2, a clamping groove matching the clamping head 3 is opened on the upper edge of the muffler lower shell 1, an air inlet 5 is arranged on the upper surface of the muffler lower shell 1, and a muffler cotton 6 is glued on the inner surface of the muffler lower shell 1, a fixing rod 7 is fixedly arranged on the inner wall of the muffler lower shell 1, and a plurality of barrier rings 8 are arranged at equal distances on the outer wall of the fixing rod 7, and a plurality of barrier rings 8 are surrounded by notches 9 on the outer walls, and the notches 9 on the outer walls of two adjacent barrier rings 8 are staggered. An air outlet 11 is opened on the lower surface of the muffler lower shell 1, and the set muffler upper shell 2 can be clamped with the clamping groove on the upper end of the muffler lower shell 1 through the clamping head 3 on the lower surface. Thereby, the assembly of the silencer is completed, and the air inlet 5 on the surface of the upper shell 2 of the silencer can be connected to the air outlet 11 of the adsorption tower, so that the nitrogen discharged from the adsorption tower enters the lower shell 1 of the silencer from the air inlet 5, and the nitrogen introduced will be blocked by the barrier ring 8 on the outer wall of the fixing rod 7, and pass through the notch 9 on the outer wall of the barrier ring 8 to another barrier ring 8, and the notches 9 on the outer walls of two adjacent barrier rings 8 are staggered, which can effectively change the moving direction of the introduced nitrogen, so that the noise in the silencer is attenuated or reflected back, and at the same time, cooperate with the silencer cotton 6 on the inner surface of the lower shell 1 of the silencer to absorb the noise, and finally discharge it from the air outlet 11, the process can effectively reduce the noise of nitrogen exhaust from the oxygen generator and avoid noise pollution.

[0023] like Figure 3 As shown, a sealing strip 4 is provided at the upper edge of the muffler lower shell 1, and a sealing groove matching the sealing strip 4 is opened at the lower surface edge of the muffler upper shell 2. During the clamping process of the muffler lower shell 1 and the muffler upper shell 2, the sealing strip 4 at the upper end of the muffler lower shell 1 can be clamped with the sealing groove on the lower surface of the muffler upper shell 2, thereby improving the sealing of the muffler assembly and avoiding leakage of nitrogen.

[0024] The lower surface of the muffler upper shell 2 is tightly fitted with the outer surface of the barrier ring 8, which can effectively ensure the sealing of the two and prevent nitrogen from leaking from the gap between the two.

[0025] The slot 9 is arc-shaped, and a flannel layer 10 is glued to the outer surface of the slot 9. The flannel layer 10 is glued to the arc-shaped slot 9. The fine fluff on the surface of the flannel layer 10 can absorb the nitrogen noise passing through the slot 9, thereby further improving the noise reduction effect of the muffler.

[0026] The fixing rod 7 and the barrier ring 8 are integrally formed by injection molding, which can effectively improve the structural strength of the two, ensure that the barrier ring 8 has a certain pressure-bearing performance, and effectively increase its service life.

[0027] Working principle: First, the upper shell 2 of the muffler can be connected with the slot on the upper end of the lower shell 1 of the muffler through the clamp head 3 on the lower surface, and the sealing strip 4 on the upper end of the lower shell 1 of the muffler can be connected with the sealing slot on the lower surface of the upper shell 2 of the muffler, so as to improve the sealing performance of the muffler assembly and avoid gas leakage. Then, the air inlet 5 on the surface of the upper shell 2 of the muffler can be connected with the air outlet 11 of the adsorption tower, so that the nitrogen discharged from the adsorption tower enters the interior of the lower shell 1 of the muffler from the air inlet 5, and the nitrogen introduced will It is blocked by the barrier ring 8 on the outer wall of the fixed rod 7, and leads to another barrier ring 8 from the notch 9 on the outer wall of the barrier ring 8. The notches 9 on the outer walls of two adjacent barrier rings 8 are staggered, which can effectively change the moving direction of the nitrogen introduced, so that the noise in the muffler is attenuated or reflected back, and at the same time, the noise is absorbed by the silencer cotton 6 on the inner surface of the lower shell 1 of the muffler, and finally discharged from the outlet 11. The process can effectively reduce the noise of nitrogen exhaust from the oxygen generator and avoid noise pollution.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nitrogen exhaust muffler, characterized in that: The invention comprises a muffler lower shell (1), wherein the upper end of the muffler lower shell (1) is clamped with a muffler upper shell (2), a clamping head (3) is fixedly arranged on the edge of the lower surface of the muffler upper shell (2), a clamping groove matching the clamping head (3) is provided on the upper edge of the muffler lower shell (1), an air inlet (5) is provided on the upper surface of the muffler lower shell (1), a muffler cotton (6) is glued on the inner surface of the muffler lower shell (1), a fixing rod (7) is fixedly arranged on the inner wall of the muffler lower shell (1), a plurality of barrier rings (8) are equidistantly arranged on the outer wall of the fixing rod (7), a plurality of the barrier rings (8) are surrounded by notches (9) on the outer walls, and the notches (9) on the outer walls of two adjacent barrier rings (8) are staggered, and an air outlet (11) is provided on the lower surface of the muffler lower shell (1).

2. A nitrogen exhaust muffler according to claim 1, characterized in that: A sealing strip (4) is provided at the upper edge of the muffler lower shell (1), and a sealing groove matching the sealing strip (4) is provided at the lower surface edge of the muffler upper shell (2).

3. A nitrogen exhaust muffler according to claim 1, characterized in that: The lower surface of the muffler upper shell (2) is tightly fitted to the outer surface of the barrier ring (8).

4. A nitrogen exhaust muffler according to claim 1, characterized in that: The notch (9) is arc-shaped.

5. The nitrogen exhaust muffler according to claim 1, characterized in that: The outer surface of the notch (9) is glued with a flannel layer (10).

6. The nitrogen exhaust muffler according to claim 1, characterized in that: The fixing rod (7) and the barrier ring (8) are integrally formed by injection molding.

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